Window construction



June 25, 1940. H. J. GALEY.

WINDOW CONSTRUCTION Filed Feb. ll. 1959 INVENTOR ///v,e/../GA?/ r AT TORNEY 1 MPU/0 Patented June 25, 1940 UNITED STATES PATENT OFFICE 2,205,523 WINDov'v CONSTRUCTION Pa., a corporation of Pennsylvania Application February 11,` 1939, Serial No. 255,913

a claims. (orzo-56.5) l

The present invention relates to window con" structions and notably to window constructions of the double or multiglazed type.

One object of the invention is to provide a simple and convenient inuitglazed Window construction including means for controlling the raldiation passing therethrough, and for deilecting y undesirable heat before it gains access to the room or building in which the win dow is employed.

10 A second object of the invention is to provide a window construction of the foregoing type which is of substantially the .same thickness as a conventional window containing the samev number of sheets or panes of glass.

These and other objects of the invention willy be apparent from consideration of the following specification and the appended claims.

It has heretofore been recognized that conventional windows involving a single plateor zo pane of glass were relatively inefficient barriers to the transmission of heat to or from the in terior of buildings in which they were installed.

For example, the outer surface of the glass, during cold weather, became chilled and in turn 25 caused chilling of the atmosphere within the buildings in which the `Windows were employed. Conversely when the atmosphere without the buildings was warmer than the` air within the buildings heat was transmitted from the exterior to the interior. v

In order to obviate this type of heat loss it has been proposed to provide windows having a plurality of sheets or panes of glass so 'spaced with respect to each other as to provide insulative 35 dead air chambers. By.use of this type of construction heat losses by conduction and convection were substantially reduced.v However, it was found diilicult to exclude moisture from the interiors of such "multiglazed windows and in time moisture produced a permanent haze upon the glass. Y

Although multiglazed. windows involving two or more spaced plates of glass substantially reduce conduction and convectional transmission of heat to or from the interior of a building. such constructions within themselves do not constitute satisfactory barriers to radiant heat to which the glass is transparent. One conventional method of excluding this typeof heat has'ini volved the provision of screens or shadessecured within the building inwhich the windows are employed. By use f such screens-theamount of light transmitted threugh the! units can be regulated fairly satisfactory. However, the

vindoor air.

screens act as collectors o t dust and, moreover,

in warm weather the screens become heated by radiant heat absorbed and, in turn, heat the Of course after the heat once gains access to the interior of a building, it can not be removed except by refrigerating apparatus or other cooling devices, which are expensive to construct and maintain. For this reason, it is preierable to intercept it before it gains access to the interior.

In accordance with one feature of the present invention the foregoing diiculties :re substantially obviated by provision of a multiglazed unit including inner and outer sheets or panes of glass, one 'of which carries or has associated therewith a series of parallel, spacedv strips or bars of opaque or translucent material and an interposed element which is vertically 4reciprocable in the plane of the window, and carries or has associated therewith strips or bars approximately corresponding lin spacing and dimension to those rst mentioned. By proper adjustment of the position of the movable member the bars on the latter can be made to coincide with or alternate with the corresponding bars associated with the sheet of glass in such manner as to control the degree of radiation passing through the construction.

For a better understanding of the inventionv reference may now be had to the accompanying drawing in which like numerals refer to like parts and in which Figure 1 is a fragmentary crosssectional view taken substantially upon the line -invention includes a' frame element 8 which may be hollow as indicated at 9 and in which are disposed spaced sheets or panes of glass Il and I2,

that are held in position in any convenient manner. One of the sheets (preferably'the outer) is provided with a grid comprising spaced stripes or bars lf3 of partially or completely opaque material. For example, a reflective material such l as a metal (aluminum) or the like is sprayed while in molten condition upon the glass to provide suitably spaced and proportioned stripes. The bars I3 may also comprise an open grid or grill of opaque material supported independently of the glass. ySpacer elements H and I6 of rubber, wood orother material, are disposed in contact with the inner faces of the panes or sheets I2 and contact with the opposite faces oi' a vertically reclprocable plate il, of glass or other material having bars or stripes Il corresponding to the strips I3 formed thereon. llt will be apparent that element Il may comprise a simple, opaque, open grid structureinvolving rigid bars corresponding in width and spacing to the bars I3. Bars I3 and 98 are so proportioned that they cover about half of the surface to which they are applied.

Plate I1 may be vertically reciprocated by any convenient mechanism; however, for purposes of illustration is shown a plurality of horizontal shafts `I9 extending transversely through the frame 0 and having suitable bearings in sealing1^ glands or stuing boxes 20 in the latter.l Shafts I9 are provided with cam disks ZI rigidly secured Ithereto and vextending upwardly through a slot or slots 22 formed in the inner wall 23 of the frame. One of the projecting ends of one shaft Ais threaded to receive lock-nuts 24 which may be. at will, tightened frictionally to engage the adjacent face oi' the i'rame and thus to lock the shaft in any desired position or adjustment. One shaft may also include a shank portion 26 of square or other non-circular cross-section to which a wrench may be applied for rotating it.

The cams are designedto rotate through an angle somewhat less than 180, and are interconnected by a rod Il having upturned end portions u which are pivot'allyl secured as indicated at Il to the cams in such manner that by rotating y one the other is simultaneously actuated to a.l

Light and heat not passing between the bars is reflected back to the exterior of the building without affecting the temperature therewithin.

I! the cavity-9 in frame l is properly sealed,

itv will be apparent that entrance of air and dust f is excluded.

The construction is simple of design and it will be apparent that the thickness thereof may beidentical with that of a conventional triple glazed unit. Moreover, the screen construction -will last as long as the unit in which it is employed.

The form of the invention herein shown and described is to be considered merely as illustraative. It will be apparent that numerous modifications may be made therein without departure from the spirit of the invention or the scope of the appended claims. l

What I claim is:

l. A multiglazed window construction comprising two sheets of glass disposed in a frame, the sheets having transverse stripes of at least partially opaque material directly `adherent thereto, the width of the stripes on one sheet approximately corresponding to the spacing between the stripes on the other. sheet, one sheet ing reclprocable in the plane thereof to bring g the stripes thereon into register either with the stripes or the spacings on the other sheet, whereby to control the radiant light and heat passing through the sheets.

.2. A triple-glazed. window construction comprising three sheets of glass disposed in a frame in spaced parallel relation with respect to each other, two of the sheets including the intermediate sheet being'provided with spaced parallel stripes of at least partially opaque material adherent thereto, the stripes on one sheet corresponding approximately in width to the spacing between the stripes on the other sheet, the

' intermediate sheet being reclprocable selectively to bring the stripes thereon into register with the stripes or the spacing between the stripes on the other sheet, said intermediate sheet dividing the space between the two outer sheets into two distinct dead air chambers.

3. A multiglazed window construction for a building wall, comprising two spaced sheets of glass, the outer of said sheets being provided withgspaced opaque stripes of adherent material, va grid intermediate the two sheets comprising bars of opaque material corresponding in width to the spacing between the stripes of the outer sheet, said grid being reclprocable selectively to bring th'e bars of the grid into register with the stripes or the spacing between the stripes.

HENRY J. GALEY. 

